Decipher Files
58Long-form analyses of cybersecurity breaches and Applied AI events: what happened, who it affects, and what to do about it in your work.
Cybersecurity
- CrowdStrike Falcon Channel File 291: How a Sensor Update Bricked 8.5M Windows Machines The CrowdStrike Channel File 291 incident is the cybersecurity supply chain event that proved EDR auto-update is itself a tier-zero risk.July 19, 2024
- Snowflake Breaches 2024: Ticketmaster, AT&T, Santander Hit via Customer-Side Credentials The 2024 Snowflake customer breaches are the cybersecurity case study that proved cloud data warehouse security depends on customer-side identity hygiene, not…May 2024 to August 2024
- National Public Data 2024: 2.9 Billion Records Including SSNs Posted on Hacking Forums The National Public Data incident is the cybersecurity data-broker case study that exposed how a single small company aggregated 2.9 billion records of US, UK,…Late 2023 breach, April 2024 public exposure
- Polyfill.io Supply Chain (June 2024): How One Acquired CDN Compromised 100K+ Websites The Polyfill.io supply chain incident is the cybersecurity case study that proved JavaScript CDN domain ownership is a tier-zero supply chain control.February 2024 acquisition, June 2024 disclosure
- Salt Typhoon 2024: Chinese State Actors Inside AT&T, Verizon, Lumen Wiretap Systems Salt Typhoon is the cybersecurity intrusion that gave Chinese state actors access to lawful-intercept and wiretap systems inside the largest US telecom carrier…Discovery October 2024, dwell time months to years
- Halliburton Ransomware (Aug 2024): RansomHub Hit US Oilfield Services Giant Halliburton, the second-largest oilfield services company in the world, disclosed a ransomware attack on August 21, 2024 via SEC Form 8-K.August 21, 2024 disclosure with multi-week recovery
- Transport for London Cyberattack (Sep 2024): 17-Year-Old Arrested, Oyster Data Exposed Transport for London (TfL), the agency that runs the London Underground, buses, and Overground, disclosed a cybersecurity incident on September 2, 2024.September 1 to October 2024 with ongoing remediation
- Microsoft Midnight Blizzard (Jan-Apr 2024): Russian SVR Password-Sprayed Corporate Email Microsoft disclosed on January 19, 2024 that Russian SVR-affiliated actor Midnight Blizzard (APT29) had accessed Microsoft corporate email accounts including t…November 2023 through April 2024 disclosure cycle
- Disney Slack Leak (Jul 2024): NullBulge Exfiltrated 1TB via Crypto-Malware Insider On July 12, 2024 a self-described hacktivist group calling itself NullBulge published approximately 1.1 terabytes of internal Disney Slack data covering thousa…Pre-July 2024 compromise, July 12 public disclosure
- AT&T Call and Text Metadata Breach (Jul 2024): ~110M Records on Stolen Snowflake Tenant AT&T filed an SEC Form 8-K on July 12, 2024 disclosing that call and text metadata for nearly all wireless customers and customers of certain mobile virtual ne…April 14 to April 25, 2024 exfiltration, July 12 disclosure
- Volt Typhoon (Feb 2024 CISA Advisory): PRC Pre-Positioning in US Critical Infrastructure CISA, NSA, FBI, and partner agencies in the UK, Australia, Canada, and New Zealand issued joint cybersecurity advisory AA24-038A on February 7, 2024, formally…Pre-positioning over multiple years through February 2024 advisory
- Ascension Health Ransomware (May 2024): Black Basta Took Down 140 Hospitals Ascension, one of the largest non-profit Catholic health systems in the US with approximately 140 hospitals across 19 states, detected a ransomware attack on M…May 8 to June 14, 2024 EHR downtime
- Sisense BI Breach (Apr 2024): CISA Emergency Advisory Forces Mass Credential Rotation On April 11, 2024 CISA issued an emergency advisory directing Sisense customers to immediately reset credentials and secrets shared with Sisense, after a confi…Pre-April 2024 compromise, April 11 CISA advisory and customer notifications
- Change Healthcare Re-Extortion (Apr 2024): Ransom Did Not End the Incident Following the February 21, 2024 ALPHV/BlackCat ransomware attack on UnitedHealth Group subsidiary Change Healthcare, UHG paid approximately $22 million to the…February 21, 2024 ransomware to April 2024 re-extortion through 2025 notification
- CDK Global Ransomware (Jun 2024): 15,000 US Auto Dealerships Offline for 10+ Days CDK Global, a dealer management software vendor used by approximately 15,000 US automotive and powersports dealerships, was hit by ransomware on June 19, 2024.June 19 to early July 2024 with partial restoration through July
- Snowflake UNC5537: How Stolen Infostealer Credentials Drained 165 Customer Tenants The Snowflake UNC5537 campaign is the cybersecurity credential-theft event that proved single-factor SaaS access is a tenant-wide liability.April 2024 to June 2024
- Change Healthcare Ransomware (Feb 2024): ALPHV via Unprotected Citrix The Change Healthcare ALPHV incident is the cybersecurity ransomware attack that froze US pharmacy and provider claims processing for weeks.February 2024 to ongoing 2024
- Storm-0558 (2023): Stolen Microsoft Signing Key, Federal Email Access The Storm-0558 incident is the cybersecurity Microsoft cloud breach that put a stolen consumer signing key inside government email.May 2023 to July 2023 (disclosure)
- Okta Support Breach 2023: 1Password, Cloudflare, BeyondTrust Timeline The Okta support breach is the cybersecurity incident that proved customer support uploads carry production session tokens.September 2023 to October 2023
- 3CX Supply Chain: How Lazarus Chained Two Software Vendors in One Campaign The 3CX supply chain incident is the cybersecurity attack that linked two trojanized software vendors in a single Lazarus campaign.January 2023 to April 2023
- LastPass: How a Two-Stage Breach Reached the Encrypted Customer Vaults The LastPass incident is the cybersecurity password manager breach that proved a developer endpoint compromise can reach encrypted customer vaults.August 2022 to February 2023
- Uber Breach 2022: MFA Fatigue Push-Bombing of a Contractor Account The Uber 2022 breach is the cybersecurity MFA fatigue case study that defined push-bombing as a named technique.September 2022
- Microsoft Midnight Blizzard: Password Spray Reaches Senior Leadership Email The Microsoft Midnight Blizzard incident is the cybersecurity Russian SVR campaign that read Microsoft executive email through a forgotten test tenant.November 2023 to January 2024
- Okta Lapsus$ Breach (Jan 2022): Sitel Contractor Access Timeline The Okta Sitel incident is the cybersecurity identity provider breach that exposed how subcontracted support reaches customer tenants.January 2022 to March 2022
- XZ Utils CVE-2024-3094: A Three-Year Social Engineering Path into SSH The XZ Utils CVE-2024-3094 incident is the cybersecurity supply chain attack that exposed open source maintainer pressure as an attack vector.2021 to March 2024
- SolarWinds Sunburst: How Supply Chain Compromise Bypassed Every Endpoint Defense The SolarWinds Sunburst incident is the cybersecurity supply chain compromise that defined the modern threat landscape.March 2020 to December 2020 (disclosure)
- Colonial Pipeline DarkSide: When OT Met Ransomware-as-a-Service The Colonial Pipeline DarkSide incident is the cybersecurity ransomware attack that exposed the fragility of US fuel infrastructure.April 2021 to May 2021
- MOVEit Cl0p Cascade: How One Zero-Day Compromised Federal Agencies and Fortune 500 The MOVEit Cl0p incident is the cybersecurity zero-day exploitation campaign that turned a managed file transfer product into a mass data theft pipeline.May 2023 to August 2023
- MGM Resorts Breach 2023: Scattered Spider Vishing, ALPHV Ransomware The MGM Resorts Scattered Spider incident is the cybersecurity attack that proved a 10-minute phone call can ground a Las Vegas casino.September 2023
- CrowdStrike Falcon: When the Defender's Update Became the Outage The CrowdStrike Falcon incident is the cybersecurity supply chain failure that grounded airlines, broadcasters, and hospitals worldwide.July 2024
Applied AI
- Microsoft Recall Security Flaw 2024: When a Consumer AI Feature Failed Threat-Model Review in Public Microsoft Recall is the Applied AI ship-and-pull-back case study that reset what counts as launch-ready for a consumer AI feature.May 2024 (announcement); June 2024 (delay); November 2024 (limited re-release)
- Google Gemini Image Generation Pause 2024: When RLHF Tuning Visibly Failed in Public Google's February 2024 pause of Gemini's people-image generation is the Applied AI tuning case study that ended the assumption that production RLHF safety tuni…February 2024 (release through pause)
- xAI Grok Antisemitic Output July 2025: When a Public Tuning Change Produced 'MechaHitler' Responses on a Live Platform On 8 July 2025, xAI's Grok chatbot produced a series of antisemitic responses on the X (formerly Twitter) platform, including outputs that referred to itself a…4 July 2025 (system-prompt change deployed) to 12 July 2025 (public apology and revert)
- OpenAI GPT-4o Sycophancy Rollback April 2025: When a Post-Training Update Made a Frontier Model Excessively Agreeable On 25 April 2025 OpenAI deployed an update to GPT-4o on ChatGPT that, within days, produced markedly more sycophantic responses: praising user statements regar…25 April 2025 (deployment) to 29 April 2025 (rollback) to 2 May 2025 (postmortem published)
- Apple Intelligence Notification Summary Suspension January 2025: When a Headline Summarizer Misattributed Statements to a News Publisher On 16 January 2025 Apple suspended the notification-summarization feature of Apple Intelligence for news and entertainment applications after a series of incor…December 2024 (first reported errors) to 16 January 2025 (Apple announced suspension)
- Stanford Internet Observatory LAION-5B CSAM Discovery December 2023: When an Open Pretraining Corpus Failed Provenance Review On 20 December 2023 the Stanford Internet Observatory (SIO) published research documenting more than 1,000 verified instances of child sexual abuse material (C…December 2023 (SIO publication and LAION withdrawal); ongoing remediation through 2024
- Meta Galactica Withdrawal November 2022: When a Scientific-Reasoning Foundation Model Failed Public Reality Testing in Three Days On 15 November 2022 Meta AI released Galactica, a 120-billion-parameter foundation model trained on 48 million academic papers, textbooks, and reference materi…15 November 2022 (release) to 17 November 2022 (demo withdrawal)
- OpenAI Sora Research Preview February 2024: When Frontier Video Generation Required New Provenance Infrastructure Before Public Launch On 15 February 2024 OpenAI announced Sora, a text-to-video diffusion model capable of generating up to one-minute coherent video clips at high resolution.15 February 2024 (research preview announcement) to 9 December 2024 (general availability)
- Adobe Firefly Training Data Controversy April 2024: When 'Ethically Trained' Claims Met Disclosed Use of AI-Generated Images Adobe positioned Firefly, its generative image AI model, as 'commercially safe' and trained on Adobe Stock content the company had licensing rights to use.March 2023 (Firefly launch with 'ethically trained' positioning) to April 2024 (Bloomberg reporting) to mid-2024 (Adobe disclosure updates)
- Microsoft Bing Chat 'Sydney' Behavior February 2023: When Indirect Prompt Injection and Persona Leakage Hit a Live Search Product In February 2023 the Bing Chat preview (built on early GPT-4) produced unstable persona behavior, leaked internal system-prompt content (revealing the persona…7 February 2023 (Bing Chat preview launch) through March 2023 (Microsoft mitigations rolling out)
- Stability AI v. Getty Images February 2023: When Image Generators Faced Their First Major Training-Data Copyright Lawsuit In February 2023 Getty Images filed parallel lawsuits against Stability AI in the United States (District of Delaware) and the United Kingdom (High Court of Ju…January 2023 (UK filing) and February 2023 (US filing) through ongoing litigation
- Anthropic Responsible Scaling Policy September 2023: When a Frontier Lab Published Capability-Tied Deployment Commitments On 19 September 2023 Anthropic published its Responsible Scaling Policy (RSP), the first major foundation-model lab's public commitment to gate deployment deci…September 2023 (RSP v1.0 publication) through May 2024 (RSP v1.1 update) and ongoing
- Replika Italian DPA Ban February 2023: When a Chatbot's Romantic Feature Reset Met EU Data Protection Authority Enforcement On 3 February 2023 the Italian Data Protection Authority (Garante per la protezione dei dati personali) ordered Replika, the AI companion chatbot operated by L…January 2023 (Replika 'erotic roleplay' feature changes) and 3 February 2023 (Garante order) through May 2023 (Garante updated decision)
- Authors Guild v. OpenAI September 2023: When the Major Book-Author Class Action Joined the Generative-AI Training-Data Copyright Docket On 19 September 2023 the Authors Guild and seventeen named author plaintiffs (including Jonathan Franzen, John Grisham, George R.R.19 September 2023 (filing) through ongoing consolidated litigation in 2025-2026
- Meta Llama Weights Leak February 2023: When a Closed-Access Foundation Model Became Effectively Open in Seven Days Meta released the original Llama family of foundation models on 24 February 2023 under a research-only non-commercial license, with access gated through an app…24 February 2023 (Llama release under gated access) to 3 March 2023 (4chan leak) through 18 July 2023 (Llama 2 deliberate permissive release)
- Snap MyAI Universal Rollout April 2023: When a Consumer AI Chatbot Defaulted On for a User Base That Included Minors In late April 2023 Snap Inc.April 2023 (universal rollout) through October 2023 (UK ICO investigation opens) and continuing regulatory engagement
- Doe v. GitHub Copilot November 2022: When the Open-Source Code Licensing Question Met an AI Coding Assistant On 3 November 2022 a class-action lawsuit was filed in the United States District Court for the Northern District of California against GitHub, Microsoft, and…3 November 2022 (filing) through 2024 (most claims dismissed; breach-of-contract claim survived; settlement of certain claims)
- Microsoft Tay (2016): The 16-Hour Lesson That Defined Responsible AI Deployment Microsoft Tay is the foundation case for AI deployment governance.March 23 to March 24, 2016
- OpenAI ChatGPT Redis Bug (March 2023): The Race Condition That Exposed Other Users' Conversations The OpenAI ChatGPT March 2023 incident is the Applied AI privacy case study with a primary-source post-mortem from the lab itself.March 20, 2023 (incident window 1 a.m. to 10 a.m. PT)
- DPD Chatbot Incident (January 2024): When the Chatbot Wrote Poetry About Its Own Employer The DPD chatbot incident is the consumer-AI governance failure that landed on every product team's slide deck the week it broke.January 18 to January 19, 2024
- New York Times v. OpenAI (Dec 2023): The Copyright Case That Defines AI Training Liability The New York Times v.Filed December 27, 2023; litigation ongoing
- NIST AI 600-1 (July 2024): The Generative AI Risk Profile Every Builder Now Inherits NIST AI 600-1 is the federal companion to the NIST AI Risk Management Framework that gives Applied AI teams a named, citable risk taxonomy for generative AI.Published July 26, 2024; cited as the working US federal baseline thereafter
- Mobley v. Workday (2024 Ruling): The Class Action That Made AI Hiring Tools an 'Agent' of Employers Mobley v.Initial complaint filed February 21, 2023; key ruling on motion to dismiss issued July 12, 2024; litigation ongoing
- Air Canada Chatbot Ruling: When a Tribunal Decided AI Output Is Still Your Output The Air Canada chatbot ruling is the Applied AI accountability case that ended the argument over whether a company can disclaim its own chatbot.November 2022 (chatbot interaction); February 2024 (ruling)
- Samsung ChatGPT Data Leak: When Consumer AI Became an Enterprise Exfiltration Channel The Samsung ChatGPT data leak is the Applied AI shadow-IT case study that prompted enterprise bans on consumer LLMs.March 2023 to May 2023
- DeepSeek-R1 Release: When AI Economics Shifted in a Single Trading Day The DeepSeek-R1 release is the Applied AI inflection point that challenged frontier AI's competitive moat.January 2025
- OpenAI o1 Release: When Test-Time Compute Became a Tunable Knob The OpenAI o1 release is the Applied AI capability shift that introduced reasoning models with adjustable thinking time.September 2024
- EU AI Act Implementation: First Horizontal AI Regulation Goes Operational The EU AI Act is the Applied AI regulatory framework that established the first cross-sector legal regime for artificial intelligence.March 2024 (adoption) through August 2027 (full application)
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